Station 1 Add a small scoopful of sodium chloride into a half-full 100 mL beaker of water. Stir the contents of the beaker for approximately one minute Record your observations in your lab sheet. When you are finished, you may pour this solution down the sink drain and rinse. Station 2 Observe the milk, observe the vinegar. In the container, add 1/4 cup of milk and 1⁄2 teaspoon of vinegar Take turns mixing for least 4-5 minutes Pour it back and forth using in the strainer from one container to another. Once you have a softened substance, place it on the paper towel to dry. Record your observations. Be sure to write exactly what you observed. (Think Aloud in Your Mind...what properties of matter changed...size, shape, color, etc? What changed about it? Be specific) Station 3 Observe the sugar, water and the yeast. In the container, add 1⁄2 spoonful of yeast and 1 spoonful of sugar to 1⁄4 cup of hot water. Let it sit for at least 3 -5 minutes Record your observations. Be sure to write exactly what you observed. Station 4 Fill a 100 mL beaker about half way with acetone. Slowly add 2-3 pieces of Styrofoam to the beaker. After you have observed a change, record your observations in your lab sheet. Clean up by pouring the contents of your beaker into the acetone waste beaker. Station 5 Observe the apple. Carefully slice one piece. Let it sit on the plate for a few minute (until you notice changes) Record your observations. Be sure to write exactly what you observed. (Think Aloud In Your Mind...what properties of matter changed...size, shape, color, etc? What changed about it? Be specific) Station 6 Use a scoopula to add a small sample of sodium hydrogen carbonate (baking soda) to a test tube. Add 5mL of vinegar and touch the bottom of the test tube with your hand. Record your observations in your lab sheet. Clean up by rinsing the contents down the sink with plenty of water. Station 7 Pour 5 mL of hydrogen peroxide into a beaker. Add 1 tablespoon of baking soda. Stir the mixture. Observe and record the reaction. Throw the contents away (not the cup).